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The full review is available here
English review at BudgetLightForum
German review on my website
Summary
With up to 600 lumens, the tiny Nitecore TINI3 achieves an impressive brightness for its size and with the adjustable color temperatures it adapts to any situation. The practical OLED display provides information about brightness, battery level and remaining runtime. Thanks to its small size and a weight of just 20 g, it is barely noticeable on your key ring, but is always ready for use.
It would have been nice to have an (optional) automatic lockout to prevent the flashlight from turning on in the pocket if you forget to lock it manually. Time will tell whether a glass would have been useful to protect the TIR optic. Other than that, the TINI3 is pretty much perfect.
Um it's small and throws a lot of lumens. Is the color adjustment useful at all? I'd rather have a nice fixed high CRI 4000k or so. And right angle LEDs for headband use. I don't understand why no one does that.
http://flashlights.parametrek.com/index.html?type=headlamp&led_color=all%2Chigh+CRI%2Cneutral+white
I didn' verify if any of them are 4000K but I think it's a good start. And if they have memory mode, just set to the high level and forget about it?